The $\mathrm{p} K_a$ values of four carboxylic acids are $4.76,4.19,0.23$ and 3.41 respectively. The…
The $\mathrm{p} K_a$ values of four carboxylic acids are $4.76,4.19,0.23$ and 3.41 respectively. The $\mathrm{p} K_a$ value of strongest carboxylic acid among them is
4.19
3.41
0.23
4.76
Solution
A stronger acid will have higher $K_a$ value but smaller $\mathrm{p} K_a$ value while a weaker acid will have smaller $K_a$ value but higher $\mathrm{p} K_a$ value. Hence among the given carboxylic acid the $\mathrm{p} K_a$ value of strongest acid is 0.23 .